Formations beginning with I
73 names, each with a page of its own for the fossils recorded from it. The list is what this site has looked up and cached, not every formation the record holds.
- Ichetuy
- Ichinotani
- Icla
- Idmarrach
- Idoudine
- Idri
- Ifenthal
- Ifezouane
- Ihandar
- Ihmert
- Ihungia
- Il'chir
- Il'inskaya
- Ilaro
- Ilek
- Illtyd
- Ilsenburg
- Ilundain Marls
- Imo
- Imperial
- Imuruk Volcanics
- Inca
- Independence Shale
- Indidura
- Indio
- Inferior Oolite
- Ingelara
- Inglis Limestone
- Inklin
- Insektenmergel
- Inucu
- Inwood
- Iola
- Ion
- Ipururo
- Irati
- Irbitey
- Irbzer
- Irdin Manha
- Iren Dabasu
- Irene
- Irene Bay
- Iron Springs
- Irondequoit
- Irondequoit Limestone
- Ironshore
- Irrawaddy
- Isalo II
- Isalo IIIb
- Ischigualasto
- Isfara
- Isheevo
- Ishido
- Ishiizawa
- Isidro
- Isla Colon
- Island Sandstone
- Issafen
- Isztimér
- Isztimér Limestone
- Isztiméri Mészko
- Itaboraí
- Itahana
- Itaituba
- Itat
- Ithaca
- Itsuki
- Ituzaingo
- Iva-Gora Beds
- Ivane Horizon
- Iwaizaki
- Ixaltepec
- Ixtaltepec